Adjustable tightening and locking device for bed-springs and other suchlike articles.



T. FALGRANT. I

ADJUSTABLE TIGHTENING AND LOCKING DEVICE FOR BED SPRINGSAND, OTHER SUCHLIKE ARTICLESA' APPLICATION FILED AUG-31. I9I4.

1,171,041. y Y Patented Feb.v8,19l6.-

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r )MIEOTDSJ THE COLUMBIA FLANOURAPH v61.7., WASHINGTON. D. C-

n srarns PAT THOMAS E. GRANT, OF GUELPH, ONTARIO, CANADA.

ADJUSTABLE TIGHTENING AND LOCKING DEVICE FOR BED-SPRINGS AND OTHER SUCHLIKE ARTICLES.

Specification of Letters Patent.

Patented Feb. 8, 1916.

Application filed August 31, 1914. Serial No. 859,536.

To all whom it may concern:

' Be it known that I, THOMAS FoRDYon GRANT, a subject of His Majesty King George the V of Great Britain, and a resident of the city of Guelph, in the county of lVellington, Province of Ontario, and Dominion of Canada, have invented a new or Improved Adjustable Tightening and Locking Device for Bed-Springs and other Suchlikc Articles, of which the following is a specification.

The object of my invention is an adjustable, tightening and locking device for bedsprings and other suchlike articles.

It consists of a hand lever the fulcrum point or pivot of which can be inserted in one or other of a plurality of pivoting holes on the side frame of the bedspring, said hand lever carrying on its forward short arm an oscillating connecting link pivoted on the front bar of the cross frame of the bedspring, so that when the long arm of the hand lever is driven home against the side rail of the bedspring, the bedspring shall be extended and locked in a tightened position. I attain this object by means of the mechanism illustrated in the accompanying drawings in which Figure I is a sectional elevation of one end of the bedspring showing my new or improved adjustable, tightening and locking device for bedsprings and other suchlike articles. Fig. II is a plan of same showing the bedspring extended and locked, and in dotted lines the same when the hand lever is relaxed or thrown out of action. Fig. III is a similar view with the oscillating connecting link removed showing the adjusting pivot holes in the hand lever and the cross rail. Fig. IV is a cross section on line X X Fig. I. -Fig. V is a detailed view of the connecting link showing the adjusting pivot holes, and Fig. V I is a sectional top View of the hook or clutch of the brace M on line Z Z Fig. I.

Similar letters of reference indicate similar parts in all the drawings.

In Fig. I the hand lever C is pivoted at E in one of the holes 6 on the side rail A of the bedspring, this hand lever C is provided at its forward free end with three or more pivot holes 6 as is also the cross rail B. Into one or other of these pivot holes a downwardly projecting pivot e at either end, of the connecting link D projects, according to the amount of tension required on the spring. As shown in dotted lines in Fig. II the hand lever moves in a horizontal direction so that when closed the inner end of the connecting link is thrown over the dead or fulcrum point of the hand lever C, and the tension of the bedspring holds same in that position. As will readily be seen the amount of tension can be regulated by means of the pivot. holes 6 as shown in Fig. III.

In Fig. V is shown another arrangement in which the adjusting pivot holes are located in the ends of the connecting link D as it makes no difference whether the pivots are carried on the frame A and the crossrail B or on the connecting link D providing that they correspond to any two of the adjusting pivot holes.

L, Fig. I is a folding leg attached to the bedspring when used as a cot or stretcher, M, being a latch or hook for holding same in position as shown in Fig. I.

b are the usual tension springs comprising the bedspring.

The cross rail 13 is slidably mounted on the ends of the side rails A.

I claim:

An adjustable, tightening and locking device for bedsprings and other suchlike articles, comprising side bars and front cross bars, slidably mounted on the ends of the amount of tension to be applied to the spring bottom fabric, substantially as here- T. F. GRANT.

' inbefore described.

Witnesses:

C. L. MOFADGEN, I D. H. BARLOW.

Copies of this patent may be obtained for five cents each, by addressing" the Commissioner of Patents,

Washington, .D. G. 

